Red Hat AS 64-bit and multi core chip recognition

We're running RH AS 64-bit 4.6 and for some reason after installing a Hitachi SAN driver, the kernal only recognizes 1 cpu of the 8 (4 dual core Opterons). This server hosts an Oracle 9i database, so we're stuck with RH 4 (RH 5 isn't certified with 9i). What do we need to do to get it to recognize all 8 cores?

From serverfault $pageUsers[$entry.posts[0].author].name

• Need more information:

  • Did you install an SMP-capable kernel? Some distros offer the choice between a regular and a SMP kernel.
  • Did the kernel recognize & boot the 8 cores without the SAN driver? If yes, the SAN driver may be buggy.
  • Please post the panic message you get, that might give a clue.
  From sleske